Refractory material.



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35 and I n uuwlruol l luwo,

wuss newrente e UNITED STATES PATENT OFFICE.

HENRY AKERMAN DESMOND COLLINS, OF LONDON, ENGLAND.

REFRACTORY MATERIAL.

No Drawing.

To all whom 'it may concern:

Be it known that I, HENRY AKERMAN DESMOND COLLINS, a subject of the King of Great Britain, residing at Savoy Court,

Strand, London, England, have invented new and useful Improvements in and Relating to Refractory Materials; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in the manufacture of refractory materials capable of resisting high temperatures and is adapted for use in the production of articles such as retorts, crucibles, bricks and blocks, "and as a lining for furnaces and the like.

In the specification of my former Patent No. 826,763 I described the use of viscous sodium silicate of a density of say 140 Tw.,

for use in the manufacture of refractory material. I have now discovered that I can produce greatly improved results by the use of a powdered solid silicate or water glass. According to my present invention I mix ulverized uartz. silver 0 sea sand r other equlva enma f AgF in suitable proportio 1e ma eria s are thoroughly incorporated with the addition of sufiicient steam or hot water to form a thorough plas 10 mass. e mix ure still in a 1 submitted. to

ressure 1n sulta e mo s 0 form bricks, crucibles, retorts, or other desired articles, I t a high temperature, say above v I the case of say bricks or blocks. uan ity of water glass which I use is usually from about 3 to 6% of the mass by wei ht. I may incorporate with the mixture 40 if esired, a small proportion of li or alfalfi fother suitable calcium com ,ound, g,

( ui-o 1 Specification of Letters Patent.

Application filed July 8 1907. Serial No. 382,770.

or -alk line arth materia The a 10 es when molded under ressure may be taken Patented Jan. 24, 1911.

ing provided that the proportionof adZi articles under pressure.

The material above described, with or without admixture with other suitable substances, forms an excellent lining for furnaces. In this case the powdered mixture of silica and wa e r glass may be used in proportions varying from 90% silica. 10%

a Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be per 1. The process ofmanufacturing refractory articles or material consisting-in mixing pulverized silicious matter and powdered water glass with heat and moisture to produce a plastic mass and then molding the massiwhilein heated state under e s 1re, and immediately burfiifigit' a t ahigh temperature, substantially as described.

2. The process of manufacturing refractory articles or material consisting in mixing silicious matter and powdered water glass and alkaline material with heat and moisture to produce a plastic mass then molding the mass while in a heated state under pressure and immediately burning at a high temperature, substantially as described.

3. .The processof manufacturing refractory articles or material consisting in mixing silicious matter and powdered water glass and alkaline material with heat and moisture to produce a plastic mass, then molding sure and immediately burning at a temperature of not less than 1500 0., substantially as described.

HENRY .LKERMAN DESMOND COLLINS. Witnesses: I

H. D. JAMESON,

direct to the kiln wit out preliminary drywater lass to 99% silica and I% water lss.

formed, I declare that what I claim is I water be only suflicient to produce coherent the mass while in a heated state under pres- 

